ASTROSAT CZTI

Data Quality Report

Orbit 36712

Creation date: 2024-06-27T21:30:39.677527
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_101T01_9000005238_36712cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36712cztM0_level2_quad_clean.evt
Size (bytes)156,021,12030,035,520
Size148.8 MB 28.6 MB
Events in quadrant A885,938202,076
Events in quadrant B1,011,192206,881
Events in quadrant C1,230,357194,852
Events in quadrant D1,479,510180,110

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036332
B041261
C046931
D056361

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A170550.293255%
B1705140.821114%
C17051015.923754%
D170517910.498534%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 3767 1706 2 2 0.05% 0.12%
B 3767 1706 3 3 0.08% 0.18%
C 3767 1706 83 83 2.20% 4.87%
D 3767 1706 145 145 3.85% 8.50%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 90212 2137.95 200 196 42.1
A 9 143 15527 364.12 200 196 42.1
A 13 254 2938 65.12 200 196 42.1
B 0 221 143680 3476.49 200 195 41.3
B 5 255 27956 672.62 200 195 41.3
B 0 189 13932 332.83 200 195 41.3
C 14 254 245651 5286.8 191 192 46.4
C 0 10 157070 3378.91 191 192 46.4
C 15 214 79437 1706.81 191 192 46.4
D 12 233 415252 8821.12 186 180 47.1
D 13 36 205111 4355.2 186 180 47.1
D 2 250 31214 659.54 186 180 47.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter